| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [conj] a [adj] of | 47 |
|
| 2 | [adv] a [adj] period of | 42 |
|
| 3 | [conj] a [adj] period of | 37 |
|
| 4 | [adv] [conj] a [adj] period | 7 |
|
